I think that's the right side panel for your 5th gen accord bro, i had 6th gen accord and it's much diff than that...
but the leather kit could be done by yourself, but you're right about the side panel... because you have to spray the adhesive to glue your side panel.... it's really tough to glue it n your side panel, but the seats, center consol is easy to install... all it just just clips and wrap over your seats... just do the seats yourself and get the shop to do your side panel, save money.
here's the rear side that i did it...

but the bad news is the adhesive they came with the kit it wasn't good enought to stick the leather to the doors.... so i didn't do the front yet...
this pic kinda blurry, cuz i compress the pic in low quality..